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We confirm and characterize the exoplanetary systems Kepler-445 and Kepler-446: two mid-M dwarf stars, each with multiple, small, short-period transiting planets. Kepler-445 is a metal-rich ([Fe/H]=+0.25 $\pm$ 0.10) M4 dwarf with three…

We present 44 days of high duty cycle, ultra precise photometry of the 13th magnitude star Kepler-5 (KIC 8191672, Teff=6300 K, logg=4.1), which exhibits periodic transits with a depth of 0.7%. Detailed modeling of the transit is consistent…

We present the first good evidence for exocomet transits of a host star in continuum light in data from the Kepler mission. The Kepler star in question, KIC 3542116, is of spectral type F2V and is quite bright at K_p = 10. The transits have…

Earth and Planetary Astrophysics · Physics 2018-01-24 S. Rappaport , A. Vanderburg , T. Jacobs , D. LaCourse , J. Jenkins , A. Kraus , A. Rizzuto , D. W. Latham , A. Bieryla , M. Lazarevic , A. Schmitt

Meter-sized ground-based telescopes are frequently used today for the follow-up of extrasolar planet candidates. While the transit signal of a Jupiter-sized object can typically be detected to a high level of confidence with small telescope…

Earth and Planetary Astrophysics · Physics 2022-01-19 M. Mallonn , K. Poppenhaeger , T. Granzer , M. Weber , K. G. Strassmeier

The measurement of an exoplanet's oblateness and obliquity provides insights into the planet's internal structure and formation history. Previous work using small differences in the shape of the transit light curve has been moderately…

Earth and Planetary Astrophysics · Physics 2017-10-04 John B. Biersteker , Hilke Schlichting

We present ground-based infrared transit observations for four dynamically interacting \textit{Kepler} planets, including Kepler-29b, Kepler-36c, KOI-1783.01, and Kepler-177c, obtained using the Wide-field Infrared Camera on the Hale 200"…

We announce confirmation of Kepler-418b, one of two proposed planets in this system. This is the first confirmation of an exoplanet based primarily on the transit color signature technique. We used the Kepler public data archive combined…

Earth and Planetary Astrophysics · Physics 2014-05-23 B. Tingley , H. Parviainen , D. Gandolfi , H. J. Deeg , E. Pallé , P. Montañés Rodriguez , F. Murgas , R. Alonso , H. Bruntt , M. Fridlund

We analyze a 19-night photometric search for transiting extrasolar planets in the open cluster NGC 1245. An automated transit search algorithm with quantitative selection criteria finds six transit candidates; none are bona fide planetary…

Astrophysics · Physics 2008-11-26 Christopher J. Burke , B. Scott Gaudi , D. L. DePoy , Richard W. Pogge

We analyze 26 archival Kepler transits of the exo-Neptune HAT-P-11b, supplemented by ground-based transits observed in the blue (B-band) and near-IR (J-band). Both the planet and host star are smaller than previously believed; our analysis…

We present multiwavelength photometry, high angular resolution imaging, and radial velocities, of the unique and confounding disintegrating low-mass planet candidate KIC 12557548b. Our high angular resolution imaging, which includes…

The MEarth Project is a ground-based photometric survey to find planets transiting the closest and smallest main-sequence stars. In its first four years, MEarth discovered one transiting exoplanet, the 2.7 Earth radius planet GJ1214b. Here,…

Earth and Planetary Astrophysics · Physics 2015-06-16 Zachory K. Berta , Jonathan Irwin , David Charbonneau

We report the discovery and confirmation of a transiting circumbinary planet (PH1b) around KIC 4862625, an eclipsing binary in the Kepler field. The planet was discovered by volunteers searching the first six Quarters of publicly available…

We present a framework to conservatively estimate the probability that any particular planet-like transit signal observed by the Kepler mission is in fact a planet, prior to any ground-based follow-up efforts. We use Monte Carlo methods…

Earth and Planetary Astrophysics · Physics 2015-05-27 Timothy D. Morton , John Asher Johnson

We present first results from the Survey for Transiting Extrasolar Planets in Stellar Systems (STEPSS). Our goal is to assess the frequency of close-in extrasolar planets around main-sequence stars in several open clusters. By concentrating…

We search for transits around all known pulsating {\delta} Sct variables (6500 K < Teff < 10 000 K) in the long-cadence Kepler data after subtracting the pulsation signal through an automated routine. To achieve this, we devise a simple and…

Solar and Stellar Astrophysics · Physics 2021-10-27 Daniel R. Hey , Benjamin T. Montet , Benjamin J. S. Pope , Simon J. Murphy , Timothy R. Bedding

Kepler provides light curves of 156,000 stars with unprecedented precision. However, the raw data as they come from the spacecraft contain significant systematic and stochastic errors. These errors, which include discontinuities, systematic…

We present the radial velocity confirmation of the extrasolar planet Kepler-447b, initially detected as a candidate by the Kepler mission. In this work, we analyze its transit signal and the radial velocity data obtained with the Calar Alto…

Earth and Planetary Astrophysics · Physics 2015-05-13 J. Lillo-Box , D. Barrado , N. C. Santos , L. Mancini , P. Figueira , S. Ciceri , Th. Henning

The determination of exoplanet properties and occurrence rates using Kepler data critically depends on our knowledge of the fundamental properties (such as temperature, radius and mass) of the observed stars. We present revised stellar…

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